76312649 has 12 divisors (see below), whose sum is σ = 89478144. Its totient is φ = 64890504.

The previous prime is 76312637. The next prime is 76312661. The reversal of 76312649 is 94621367.

It is an interprime number because it is at equal distance from previous prime (76312637) and next prime (76312661).

It is a de Polignac number, because none of the positive numbers 2^k-76312649 is a prime.

It is a super-3 number, since 3×76312649³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (76312619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92 + ... + 12354.

It is an arithmetic number, because the mean of its divisors is an integer number (7456512).

Almost surely, 2^76312649 is an apocalyptic number.

It is an amenable number.

76312649 is a deficient number, since it is larger than the sum of its proper divisors (13165495).

76312649 is a wasteful number, since it uses less digits than its factorization.

76312649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12404 (or 12397 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 76312649 is about 8735.7111330446. The cubic root of 76312649 is about 424.1624084876.

The spelling of 76312649 in words is "seventy-six million, three hundred twelve thousand, six hundred forty-nine".